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- authorities have reported ongoing attempts by Russian-linked actors to compromise U.S.
- The Cybersecurity and Infrastructure Security Agency (CISA) leads the U.S.federal government's efforts to defend against cyberattacks.CISA collaborates with federal, state, local, tribal, and territorial partners to share threat...
- CISA is the primary federal agency responsible for protecting U.S.
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U.S. authorities have reported ongoing attempts by Russian-linked actors to compromise U.S. critical infrastructure and government networks, with several intrusions detected and mitigated, though some remain ongoing as of January 28, 2026. These efforts include phishing campaigns, malware deployment, and attempts to exploit known vulnerabilities.
Cybersecurity and Infrastructure security Agency (CISA) Efforts
Table of Contents
The Cybersecurity and Infrastructure Security Agency (CISA) leads the U.S.federal government’s efforts to defend against cyberattacks.CISA collaborates with federal, state, local, tribal, and territorial partners to share threat information and coordinate incident response.
Definition / Direct Answer
CISA is the primary federal agency responsible for protecting U.S. critical infrastructure from physical and cyber threats.
Detail
Established in November 2018, CISA consolidated several cybersecurity functions previously dispersed across different federal agencies. Its mission includes reducing risk to the nation’s infrastructure and responding to incidents.CISA issues alerts, advisories, and guidance to help organizations improve their cybersecurity posture.
Example or Evidence
On January 24, 2026, CISA issued Alert AA26-024A detailing ongoing Russian state-sponsored cyber activity targeting U.S. critical infrastructure sectors, including energy, water, and communications. The alert provides mitigation recommendations for organizations.
Federal bureau of Investigation (FBI) Investigations
The FBI investigates cyberattacks and works to identify and disrupt malicious actors. The FBI’s Cyber Division focuses on countering nation-state threats, criminal cyber activity, and terrorism-related cyberattacks.
Definition / Direct Answer
The FBI investigates cybercrimes, including those perpetrated by foreign governments, and works to bring perpetrators to justice.
Detail
The FBI utilizes a variety of investigative techniques, including digital forensics, network analysis, and human intelligence, to track down cybercriminals. The agency also works closely with international partners to share information and coordinate investigations.
Example or Evidence
In December 2025, the FBI indicted four Russian nationals for their alleged involvement in a hacking campaign targeting U.S. energy companies between 2012 and 2017. The indictment alleges the hackers gained unauthorized access to computer systems and stole confidential information.
Office of the Director of National Intelligence (ODNI) Assessments
The ODNI provides intelligence assessments on cyber threats to policymakers. These assessments inform national security strategy and policy decisions.
Definition / Direct Answer
The ODNI coordinates intelligence gathering and analysis related to cybersecurity threats facing the United States.
Detail
The ODNI draws on information from various intelligence agencies, including the CIA, NSA, and FBI, to produce comprehensive assessments of the cyber threat landscape. These assessments cover a wide range of topics, including nation-state cyber capabilities, cybercrime trends, and emerging cyber technologies.
Example or Evidence
The ODNI’s 2024 Annual Threat Assessment identified Russia as a persistent and meaningful cyber threat to the U.S., citing its willingness to conduct disruptive and damaging cyber operations.
U.S.Department of State Response
The U.S. Department of State leads diplomatic efforts to counter malicious cyber activity. This includes working with international partners to establish norms of responsible state behavior in cyberspace and holding accountable those who violate those norms.
Definition / Direct answer
The State Department uses diplomatic channels to address and deter malicious cyber activity originating from foreign nations.